Connector: Safely Screw Lock 1/8" (3.5 mm) inside plus configuration for Sennheiser pocket transmitter.
Compatibility With Sennheiser EW100 EW300 EW500 SK100 SK300 SK500 EK100 EK300 EK500
EK2000 G1 G2 G3 G4 ... .... All Sennheiser Wireless Bodypack Transmitter